Inter-column power supply conversion cabinet

Abstract

The invention discloses an inter-column power supply conversion cabinet, which comprises a cabinet body, and a power supply input module, a power supply conversion module, a power supply direct current distribution module and a monitoring module which are arranged in the cabinet body, the power supply input module is used for accessing a first direct current / alternating current power supply and controlling the on-off of an input branch; the power supply conversion module is used for converting a first direct current / alternating current power supply into a second direct current power supply; the power supply DC power distribution module is used for performing DC power distribution and realizing DC output main loop and / or branch metering; the output end of the power supply DC power distribution block is provided with a DC fuse. The monitoring module is used for monitoring the working state of the power conversion cabinet in real time and collecting and storing the operation parameters of the power conversion cabinet. The technical problem that an existing power supply conversion cabinet cannot realize multi-type alternating current or direct current to direct current is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply devices, and in particular to an inter-row power conversion cabinet. Background Art

[0002] With the rapid development of communication networks, operators have built a variety of power supply systems, including AC220V, AC380V, DC48V, DC240V, DC336V, etc., among which communication transmission rooms usually use DC48V power supply. The patent document with application number CN201921759751.6 discloses a modular structure of a dual power conversion switch and a dual power conversion cabinet, including a frame for sliding connection to the cabinet column, two sets of copper bars respectively insulated and fixed above and below the frame, and a ground bar fixed to the frame; wherein, the side of the frame facing the cabinet door of the cabinet is provided with a first mounting position and a second mounting position; the first mounting position is used to correspond to the connection of switch bodies of different installation sizes, and the second mounting position is used to correspond to the connection of the controller matching the switch body; the two sets of copper bars are respectively connected to the input and output ends of the switch body. At present, the conventional practice is to use a high-frequency switching power supply to provide a stable DC48V power supply for communication transmission equipment through an AC220V to DC48V power supply. However, due to discrepancies between planning and actual development in some communication buildings, a large number of DC240V high-voltage direct current power supplies have been built on some floors. In actual use, there is a lot of redundancy. At the same time, there is no redundant capacity in the AC distribution system on this floor for AC220V to DC48V power supply, resulting in long AC power lines across floors. At the same time, the current demand for energy conservation and carbon reduction has led to the use of cold channels in new equipment rooms by operators to reduce the overall PUE of the equipment room and improve energy efficiency. Therefore, it is urgent to propose an inter-row power conversion cabinet to solve the technical problem that the existing power conversion cabinet cannot achieve multi-type AC or DC to DC conversion. Summary of the invention

[0003] The main purpose of the present invention is to provide an inter-row power conversion cabinet, aiming to solve the technical problem that the existing power conversion cabinet cannot realize multi-type AC or DC conversion.

[0004] To achieve the above object, the present invention provides an inter-row power conversion cabinet, wherein the inter-row power conversion cabinet comprises: a cabinet body, and a power input block, a power conversion block, a power DC distribution block and a monitoring block disposed inside the cabinet body;

[0005] The power input block is used to access the first DC / AC power supply and control the opening and closing of the input branch;

[0006] The power conversion block is used to convert the first DC / AC power supply into a second DC power supply;

[0007] The power supply DC distribution block is used for DC power distribution and realizes DC output main circuit and / or branch circuit metering; a DC fuse is provided at the output end of the power supply DC distribution block;

[0008] The monitoring block is used to monitor the working status of the power conversion cabinet in real time, and to collect and store the operating parameters of the power conversion cabinet.

[0009] In one of the preferred solutions, the power input block is arranged at the bottom of the cabinet; one end of the power input block is connected to a DC input or an AC input, and the other end of the power input block is connected to a power conversion block.

[0010] In one of the preferred solutions, the power input block includes an isolating switch, a DC input branch and an AC input branch;

[0011] The isolating switch is connected to the DC input branch and the AC input branch respectively, and the isolating switch is used to control the switch of the DC input branch or the AC input branch.

[0012] In one of the preferred solutions, the DC input branch includes a parallel copper busbar and a DC input fuse; the DC input fuse is respectively connected to the isolating switch and the DC input.

[0013] In one of the preferred solutions, the AC input branch includes an AC input molded case circuit breaker, and the AC input molded case circuit breaker is connected to the AC input and the disconnector respectively.

[0014] In one of the preferred solutions, the power input block further includes a module-controlled circuit breaker, and the module-controlled circuit breaker is connected to the power conversion block.

[0015] In one of the preferred solutions, the power conversion block includes a power module; a module-controlled circuit breaker is provided at the front end of the input branch of the power module, and the power module is used to convert the connected first DC / AC power supply into a second DC power supply.

[0016] In one of the preferred solutions, the power conversion block further includes a rectifier module, and the rectifier module is installed in the power conversion cabinet by hot plugging.

[0017] In one of the preferred solutions, the power supply DC distribution block includes a DC output positive pole row and a DC output negative pole fuse; and the DC output negative pole fuse is configured with a maximum of 80 circuits.

[0018] In one of the preferred solutions, the monitoring block is configured with at least one RS485 interface and one TCP / IP communication interface.

[0019] In the above technical solution of the present invention, the inter-row power conversion cabinet includes: a cabinet, and a power input block, a power conversion block, a power DC distribution block and a monitoring block placed inside the cabinet; the power input block is used to access the first DC / AC power supply and control the disconnection of the input branch; the power conversion block is used to convert the first DC / AC power supply into a second DC power supply; the power DC distribution block is used to perform DC power distribution and realize DC output main circuit and / or branch metering; the output end of the power DC distribution block is provided with a DC fuse; the monitoring block is used to monitor the working status of the power conversion cabinet in real time, and collect and store the operating parameters of the power conversion cabinet. The present invention solves the technical problem that the existing power conversion cabinet cannot realize multi-type AC or DC to DC conversion.

[0020] In the present invention, an AC / DC input part is set through a power input block, wherein there are both high-voltage DC 240V input fuses and AC 220V molded case circuit breakers, and matching isolation switches, so as to realize the application of the power conversion cabinet in different power supply scenarios, and the high-voltage DC input fuse part of the system is equipped with an isolation insulation panel, which improves safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the front and back structures of an inter-row power conversion cabinet according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the cold channel layout of the inter-row power conversion cabinet according to an embodiment of the present invention;

[0024] Figure 3 The figure is an electrical schematic diagram of an inter-row power conversion cabinet according to an embodiment of the present invention.

[0025] Description of Figure Numbers:

[0026] 1. Parallel copper busbar; 2. First positive input fuse; 3. First negative input fuse; 4. Isolating switch; 5. Module control circuit breaker; 6. AC input molded case circuit breaker; 7. Power module; 8. DC output positive busbar; 9. Monitoring module; 10. DC output negative fuse.

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, in the present invention, the descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0031] Furthermore, the technical solutions between the various embodiments of the present invention may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] See also Figure 1-Figure 3 According to one aspect of the present invention, the present invention provides an inter-row power conversion cabinet, wherein the inter-row power conversion cabinet comprises: a cabinet body, and a power input block, a power conversion block, a power DC distribution block and a monitoring block 9 disposed inside the cabinet body;

[0033] The power input block is used to access the first DC / AC power supply and control the opening and closing of the input branch;

[0034] The power conversion block is used to convert the first DC / AC power supply into a second DC power supply;

[0035] The power supply DC distribution block is used for DC power distribution and realizes DC output main circuit and / or branch circuit metering; a DC fuse is provided at the output end of the power supply DC distribution block;

[0036] The monitoring block 9 is used to monitor the working status of the power conversion cabinet in real time, and collect and store the operating parameters of the power conversion cabinet.

[0037] Specifically, in this embodiment, the power input block is arranged at the bottom of the cabinet; one end of the power input block is connected to a DC input or an AC input, and the other end of the power input block is connected to a power conversion block.

[0038] Specifically, in this embodiment, the power input block includes an isolating switch 4, a DC input branch and an AC input branch; the isolating switch 4 is connected to the DC input branch and the AC input branch respectively, and the isolating switch 4 is used to control the switch of the DC input branch or the AC input branch.

[0039] Specifically, in this embodiment, the DC input branch includes a parallel copper busbar 1 and a DC input fuse; the DC input fuse is connected to the isolating switch 4 and the DC input respectively; the DC input fuse includes a first positive input fuse 2 and a first negative input fuse 3.

[0040] Specifically, in this embodiment, the DC input branch further includes a second positive input fuse and a second negative input fuse, supporting dual-path input high-voltage DC power supply.

[0041] Specifically, in this embodiment, the present invention installs an isolation insulating panel outside the DC input fuse.

[0042] Specifically, in this embodiment, the AC input branch includes an AC input molded case circuit breaker 6, which is connected to the AC input and the disconnector 4 respectively; the AC input molded case circuit breaker 6 includes a first AC input molded case circuit breaker 6 and a second AC input molded case circuit breaker 6.

[0043] Specifically, in this embodiment, the power input block further includes a module-controlled circuit breaker 5 , and the module-controlled circuit breaker 5 is connected to the power conversion block.

[0044] Specifically, in this embodiment, when the power conversion cabinet inputs high-voltage DC, the isolating switch 4 is in the DC path state, the system is powered by DC, and the power module 7 can select a DC / DC module or an AC / DC module. When one high-voltage DC power supply is input, the parallel copper bus 1 is not removed, so that one power supply can also provide power for all modules. When two high-voltage DC power supplies are input, the parallel copper bus 1 is removed, and each output power supply supplies power for half of the modules, realizing AB backup in the system, and avoiding the insulation monitoring and early warning of the front-end high-voltage DC power supply due to different impedances of different loops; when the power conversion cabinet inputs AC, the isolating switch 4 is in the disconnected state, that is, in the AC path state, and the system is powered by AC. At this time, the power module 7 can only use an AC / DC module. The first AC input molded case circuit breaker 6 in the system is the main input, and the second AC input molded case is the backup input, which can be connected to the mail machine input, and the two AC inputs have a switching function.

[0045] Specifically, in this embodiment, the size of the cabinet is 600*600*2000mm or 600*1200*2000mm, and the cabinet is arranged at the head of the channel. The present invention does not make a specific limitation and can be set according to needs; for example, the height can also be configured to 1800mm, 2200mm, 2400mm. In order to adapt to the modular DC cabin room and the traditional room, the height of the power supply cabinet is changed, and the overall layout remains unchanged.

[0046] Specifically, in this embodiment, the power conversion block includes a power module 7; a module control circuit breaker 5 is provided at the front end of the input branch of the power module 7, and the power module 7 is used to convert the connected first DC / AC power supply into a second DC power supply; a module plug-in frame is provided in the cabinet, and the power module 7 is hot-plugged in the module plug-in frame; the module plug-in frame can be inserted with a DC240V to DC48V DC conversion power module 7 or an AC220V to DC48V rectifier power module 7, which is not specifically limited in the present invention and can be set according to needs.

[0047] Specifically, in the present embodiment, the power conversion block converts the first DC / AC power supply into the second DC power supply through the power module 7. In the present invention, the power module 7 converts the DC240V or AC220V power supply into DC48V as an example for explanation. A module control circuit breaker 5 is configured at the front end of the power input branch of each power module 7 to facilitate system module replacement; the power conversion block also includes a rectifier module, which is installed in the power conversion cabinet by hot plugging; the rectifier module supports hot plugging to avoid misoperation. The device is damaged instantly when the module is plugged in. The six rectifier modules have a soft start function with an adjustable soft start time of 3-10s. The heat dissipation of the rectifier module adopts a front-wind and rear-wind exhaust method, which is convenient for coordinating with the overall airflow organization of the cold channel, facilitating heat dissipation and improving energy efficiency. When the system fails in monitoring block 9, the rectifier module can autonomously balance the current without affecting the parameters that have been set for the rectifier module. Relative to an ambient temperature of 20°C, the difference between the DC output voltage of the rectifier module and the output voltage setting value shall not exceed ±0.02% of the output voltage setting value for every 1°C change in temperature.

[0048] Specifically, in this embodiment, the number of the module control circuit breakers 5 is the same as the number of the power modules 7 .

[0049] Specifically, in the present embodiment, the power supply DC distribution block includes a DC output positive pole row 8 and a DC output negative pole fuse 10; the DC output negative pole fuse 10 is configured with a maximum of 80 circuits, which can basically assume the function of a DC distribution cabinet and reduce other power distribution inputs; the power supply DC distribution block also includes a DC fuse. By setting the DC fuse in the main circuit of the DC output, the total current of the total circuit can be measured and displayed digitally. Feeders can also be installed in the DC output branch to measure the branch current and display digitally. The DC output positive pole is grounded, and the negative pole is controlled by the DC output negative pole fuse 10. A -48V DC power supply is used, and multiple output fuses are configured in the system to meet the power distribution needs of a single micromodule without the need to configure an additional column head cabinet.

[0050] Specifically, in this embodiment, the DC input negative pole fuse can be configured according to actual needs, that is, it can be configured as multiple small fuses for direct power distribution, or it can be configured as a large fuse such as 630A, 400A, etc. as the fuse of the secondary DC distribution cabinet.

[0051] Specifically, in this embodiment, a DC output circuit breaker is further provided in the power conversion cabinet; the DC output negative fuse 10 and the DC output circuit breaker are arranged front and back on the top of the system to facilitate the routing of output wiring.

[0052] Specifically, in this embodiment, the monitoring block 9 can monitor the equipment operation information in real time, including input voltage, input current, branch output voltage, branch output current, battery voltage, system efficiency, and current alarms, etc. The monitoring block 9 can monitor the system working status, collect and store system operation parameters in real time, and can set the power-off storage function of parameters. It has the real-time power meter and electricity metering function of total input and total output, and can fix the battery capacity according to the voltage value and past charge and discharge records, and control the controlled equipment according to the command of the monitoring center; the monitoring block 9 is equipped with at least one RS485 interface and one TCP / IP communication interface, and the product communication interface has the conditions for adjustment or supplementation according to the specific requirements of the user; realize the following remote control, remote signaling and remote Measurement function; power input part, telemetry: input voltage, input current, frequency and total input power; telesignaling: input overvoltage / undervoltage, phase loss, input overcurrent, frequency too high / too low, circuit breaker switch status; power module 7 part, telemetry: power module 7 output voltage, each power module 7 output current; telesignaling: each power module 7 working status, fault or normal; remote control: on / off; DC distribution part: telemetry: output voltage, total load current, branch current; telesignaling: output voltage overvoltage / undervoltage, branch fuse / switch status total warning function.

[0053] Specifically, in the present embodiment, the power conversion cabinet further includes a battery. On the basis of the uninterrupted power supply of the high-voltage DC power supply, the battery is additionally provided to increase the backup power supply guarantee and improve the stability of the system; the power conversion cabinet is provided with a battery access fuse; the battery access fuse includes a first battery positive pole fuse, a first battery negative pole fuse, a second battery positive pole fuse and a second battery negative pole fuse.

[0054] Specifically, in this embodiment, the power conversion cabinet is further provided with a cable protective cover, and the cable protective cover is used to prevent the cable jacket from being damaged.

[0055] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A row-to-row power conversion cabinet, characterized in that: include: A cabinet, and a power input block, a power conversion block, a power DC distribution block and a monitoring block placed inside the cabinet; The power input block is used to access the first DC / AC power supply and control the opening and closing of the input branch; The power conversion block is used to convert the first DC / AC power supply into a second DC power supply; The power supply DC distribution block is used for DC power distribution and realizes DC output main circuit and / or branch circuit metering; a DC fuse is provided at the output end of the power supply DC distribution block; The monitoring block is used to monitor the working status of the power conversion cabinet in real time, and to collect and store the operating parameters of the power conversion cabinet.

2. The inter-row power conversion cabinet according to claim 1, characterized in that: The power input block is arranged at the bottom of the cabinet; one end of the power input block is connected to a DC input or an AC input, and the other end of the power input block is connected to a power conversion block.

3. The inter-row power conversion cabinet according to any one of claims 1-2, characterized in that: The power input block includes an isolating switch, a DC input branch and an AC input branch; The isolating switch is connected to the DC input branch and the AC input branch respectively, and the isolating switch is used to control the switch of the DC input branch or the AC input branch.

4. The inter-row power conversion cabinet according to claim 3, characterized in that: The DC input branch includes a parallel copper busbar and a DC input fuse; the DC input fuse is connected to the isolating switch and the DC input respectively.

5. The inter-row power conversion cabinet according to claim 3, characterized in that: The AC input branch includes an AC input molded case circuit breaker, and the AC input molded case circuit breaker is connected to the AC input and the isolating switch respectively.

6. The inter-row power conversion cabinet according to any one of claims 1-2, characterized in that: The power input block further includes a module-controlled circuit breaker, and the module-controlled circuit breaker is connected to the power conversion block.

7. The inter-row power conversion cabinet according to claim 6, characterized in that: The power conversion block includes a power module; a module-controlled circuit breaker is provided at the front end of the input branch of the power module, and the power module is used to convert the connected first DC / AC power supply into a second DC power supply.

8. The inter-row power conversion cabinet according to any one of claims 1-2, characterized in that: The power conversion group block also includes a rectifier module, and the rectifier module is installed in the power conversion cabinet by hot plugging.

9. The inter-row power conversion cabinet according to any one of claims 1-2, characterized in that: The power supply DC distribution block includes a DC output positive pole row and a DC output negative pole fuse; the DC output negative pole fuse is configured with a maximum of 80 circuits.

10. The inter-row power conversion cabinet according to any one of claims 1-2, characterized in that: The monitoring block is configured with at least one RS485 interface and one TCP / IP communication interface.

Images